Finding the Fourth Proportional to 212,384.43, 318,579.08 and 72,153.99
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Solution
The fourth proportional to 212,384.43, 318,579.08 and 72,153.99 is: 108,231.81
Step by Step Solution
- Step 1: Write the proportion equation
212,384.43 : 318,579.08 = 72,153.99 : x - Step 2: Convert to fraction form
212,384.43/318,579.08 = 72,153.99/x - Step 3: Cross multiply
212,384.43x = 318,579.08 × 72,153.99 - Step 4: Simplify right side
212,384.43x = 22,986,751,391.76 - Step 5: Solve for x
x = 22,986,751,391.76/212,384.43 - Step 6: Final answer
x = 108,231.81
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.